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• What are the best practices for error handling in Perl?

  - by Mike

  I'm learning Perl, and in a lot of the examples I see errors are handled like this open FILE, "file.txt" or die $!; Is die in the middle of a script really the best way to deal with an error?

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• The fundamentals of Hash tables?

  - by kylex

  I'm quite confused about the basic concepts of a Hash table. If I were to code a hash how would I even begin? What is the difference between a Hash table and just a normal array? Basically if someone answered this question I think all my questions would be answered: If I had 100 randomly generated numbers (as keys), how would I implement a hash table and why would that be advantageous over an array? Psuedo-code or Java would be appreciated as a learning tool...

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• C++ Reference Book

  - by m00st

  Can someone list a C++ book that is just a reference to the standard library? I don't need a "learning c++" book just one that is a reference. Or at least official documentation or something? Googling only reveals "fan-site" reference.

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• Where can I find .NET Framework class diagram?

  - by CoolMagic

  I just need a file (picture, pdf or other type file for printing) of the framework structure. It is very usefull while learning .Net framework.

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• Where to place a debug log files for my daemon app?

  - by sasayins

  Hi, I am using C language and Linux as my programming platform. I am learning how to create a daemon, and I want to create a log file so that I write a debug message in my daemon. My question is where should I put the log file in my system. Should I put it in the var folder? Please advice. Many thanks.

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• In JQuery, does the advanced CSS 3 selection style work in all browsers?

  - by SLC

  I'm watching a tutorial learning JQuery for the first time, and it seems you can select items using pretty much CSS, like: $('ul li:nth-child(3)').addClass('biscuits'); Is that kind of selector going to work on all browsers, or just ones that support CSS 3 ?

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• Should I go back and fix work when you learn something new/better?

  - by SnOrfus

  Considering that we're all constantly learning, we've all got to come across a point where we learn something just awesome that improves our code or parts of it significantly. The question is, when you've learned some new technique, strategy or whatever, do your or should you go back to code that you know works, but could be so much better/maintainable/faster/generally improved and implement this new knowledge? I understand the concept of "if it ain't broke, don't fix it" but when does that become losing pride in code you've already written and what does it say for refactoring.

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• Javascript variables

  - by Uli

  I'm learning Javascript right now. Can anybody tell me why the second code block traces a empty path for -launch(this)- but using the first code block it gives me the right path? "<form action='"+launchwebsite+"/subsite/' method='post' target='_blank' onsubmit='launch(this)'>" and this not: "<a onclick='launch(this)' title='launch' class='iblack' /></a></div>" Best Uli

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• Where to learn about the Google Maps API v2 in Android

  - by misguided

  I am trying to learn a lot more about the Google Maps API in Android. I have seen the boston tutorials , which are very helpful in learning a lot of things related to android . But unfortunately , the tutorial talks about a earlier version on Google Maps API. I was wondering if there are any other sites which the experts would recommend(other than the reference on actual developers.google.com website). PS: specifically looking for android with latest version of google maps .References other than the one of developers.google.com

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• What are the latest tools that I can use to write a DSL (Domain-specific language) in 2009 Sep?

  - by servicesxiaodai

  I looked into Logix and EasyExtend for Python. Logix hasn't been around for a while and it failed to install on Python 2.6. EasyExtend's tutorial is hopeless, the code in the tutorial doesn't even work. I am looking for something so I can write my DSL. My DSL will be used as a research tool. And I don't want to spend time learning all that parsing and compiler theory.

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• Web technologies exam query

  - by user288245

  I have a practical exam in web technologies so html, css, javascript and (possibly) php. I'm still learning and just wondered if you guys had any advice. HTML im fine with, css sometimes takes me time to get right and javascript and php get a bit messy! It's open book, so what would you suggest taking with me?

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• From Java/C++ to XML

  - by Greenhouse Gases

  I know Java and C++ but am looking to get in to XML. I don't want to waste time reading over the basics of programming in a book, so has anyone any recommendations for resources for learning XML that assume a knowledge of programming already, or even better highlight how to switch from Java/C++ to XML ie. main differences etcs.

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• please help me to choose good books on algorithms [closed]

  - by davit-datuashvili

  Possible Duplicate: What is the best book for learning about Algorithms? i want to help me to choose good books on algorithms many people from this site say me that show me your code and now i ask u to help me to choose good books on algorithms please i have not books on algorithms and in case i decide to buy it of course must buy book which has high quality yes? so please any ideas ?links everything

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• Can someone explain the concept of 'hygiene' to me (I'm a scheme programmer)?

  - by incrediman

  So... I'm new to scheme r6rs, and am learning macros. Can somebody explain to me what is meant by 'hygiene'? Thanks in advance.

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• Where can I find information about signing of files?

  - by JL

  I am interested in learning more about signing files and removing signatures from files, programatically using C#, can anyone recommend a book or website covering this topic.

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• Using Joins vs Entity associations

  - by shivesh

  I am learning Entity framework and linq-to-entities. It's possible to get cross values from multiple tables using JOINS (join keyword) or using the navigation fields ( associations) in which case the framework knows how to reference the cross data. My question is what to use when?

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• Which to learn first: Java/J2EE or .NET ?

  - by Eric Gustavson

  Is there an advantage to learning Java or .NET first? (ie. would the transition from J2EE to .NET be significantly easier than the reverse?) Do you think that one platform has overtaken the other in terms of industry use? (feel free to be as biased or as objective as you like) see also: Java or .NET?

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• What is a good language to gain experience in Game programming?

  - by Rogue

  I've been learning a little of C++ and Java but my main field of interest is gaming and i would like to write code for making my own 3D Games to complement my artistic expertise

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• Network bandwidth bottleneck for sorting of mapreduce intermediate keys?

  - by Zubair

  I have been learning the mapreduce algorithm and how it can potentially scale to millions of machines, but I don't understand how the sorting of the intermediate keys after the map phase can scale, as there will be: 1,000,000 x 1,000,000 : potential machines communicating small key / value pairs of the intermediate results with each other? Isn't this a bottleneck?

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• What Should I know to underestand LINQ better?

  - by Nasser Hajloo

  As LINQ is a good query language in dot net and everyone should be able to work with it. What are the necessary abilities which a programmer should have, before start learning LINQ. And after that, What should he know about LINQ? (important tips)

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• Adding A New Row Using SQL Server Management Studio

  - by Soo

  I'm learning how to use SQL Server Management Studio and can't figure out how to insert a new row into a table. Table Structure: ID, Field1, Field2 Query: INSERT INTO Table (Field1,Field2) VALUES(1,2) Error: Major Error 0x80040E14, Minor Error 25503 I'm probably missing something very noobie like. Any help would be appreciated.

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• What is the difference between (+) and (-) operator in obj c function

  - by niceramar

  Hi i am new to iphone and starts to learning Obj c. i have notice the function definition, for some function we are using (-) and for some function we are using (+) Example: + (id)requestWithURL:(NSURL *)theURL – initWithURL: what the difference between those two operator / symbol's usage? thanks!

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• jQuery: How to write a function on click, hold and move?

  - by Syom

  I started learning jQuery just yesterday, and I like it very much. And now I decided to write a script where I can change the margin-left of an image when I click on it, hold the clicking and move the mouse. Depending on mouse coordinates I must change the image's margin-left. Could you give me an idea how I can do it? Thanks.

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• Newbie: understanding main and IO()

  - by user1640285

  While learning Haskell I am wondering when an IO action will be performed. In several places I found descriptions like this: "What’s special about I/O actions is that if they fall into the main function, they are performed." But in the following example, 'greet' never returns and therefore nothing should be printed. import Control.Monad main = greet greet = forever $ putStrLn "Hello World!" Or maybe I should ask: what does it mean to "fall into the main function"?

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• c# run process without freezing my App's GUI

  - by Data-Base

  Hello, I want to start a process (calling another program), currently the external program takes time (it is normal)! but it freezes my GUI I saw allot of examples and I'm learning, it is hard to figure it out, trying to read and learn threading, but it is not that easy (at least for me) and good simple tutorial or code sample? cheers

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